LAR2E821MELC30

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Aluminium electrolytic capacitors, also known as electrolytic capacitors, are components that are widely used in electronic products. They are mainly classified into two types: polar and non-polar. Due to its special structure, polar capacitors usually have higher capacitance and larger size compared to non-polar capacitors. The LAR2E821MELC30 is a type of polar aluminum electrolytic capacitor.

The most basic structure of the LAR2E821MELC30 (of radial lead type) consists of a cylindrical can, two sealed electrodes and an anode. A dielectric material is sandwiched between the anode and the cathode. The can is filled with a liquid electrolyte, which is usually a mixture of water and a chemical, such as boric acid. The two electrodes are usually of different metals, such as tantalum and aluminum, and each of them carries an electrical charge.

The main application fields of the LAR2E821MELC30 are general purpose power supplies, signal processing circuits and audio equipment. Its generic working principle is that when a direct current voltage is applied across the two electrodes, electrons will move from the anode to the cathode, causing a displacement of the electrolyte and a direct current will be formed, thus creating a ‘capacitor action’. As the current flows, the capacitor will store a charge in the form of an electric field, which will remain in the capacitor until the voltage is changed.

The operating voltage of the LAR2E821MELC30 is 25V, the capacitance tolerance is ±20% (at 120Hz, 20℃), the leakage current is 1.0mA (maximum) (at 20℃, at applied rated voltage for 5 minutes), its rated ripple current is 2.0A, and its lifetime is 2000 hours (at 85℃, rated voltage). Its working temperature range is -40℃ to +85℃.

Thanks to its long life, high capacitance tolerances and low leakage current, the LAR2E821MELC30 is a popular and reliable choice for use in a variety of electronics applications. It is most commonly used in audio equipment, signal processing circuits and power supplies where reliability and high capacitance are required.

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